Woodworking machine



May 22, 1928. 1,670,731

7 A. N. MILLER WQODWORKING MACHINE Filed Oct. 17, 1925 5 Sheets-Sheet l May 22, 1928.

A. N. MILLER WOODWORKING MACHINE 5 Sheets-Sheet 2 Filed Oct. 17. 1925 JZM/ May 22,1928. 1,670,731

A. N. MILLER V IOODWORKING MACHINE Filed Oct. 17. 1925 5 Sheets-Sheet 5 5 Sheets-Sheet 4 Y May 22, 1928.

A. N. MILLER WOODWORKING MACHINE Filed 001;. 17, 1925 May 22, 1928. 1,670,731

A. N. MILLER WOODWOHKING MACHINE mechanism to operate.

Patented May 22, 1928.

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ADOLPH ZAl'JMILIiERL, OFiMILWKUSEEEQWISCONSIN, AssIGNoR 0F one-FOURTH T0 HER- MAN JUNG, onn'sroun'rnrmo WILLIAMisnassnnnnueen, "AND ONE-FOURTH mo CHARLES KUNKEL, ALL or; MILWAUKEE, WISCONSIN.

woonwonxme meomnn.

Ap IicationfiIed 'Oeteber 17 1-925. Serial'No. 63,017.

.This invention relates to Wood-working machines.v e

.Qbjects of thisinveritionare to proivide a wood-working machine which will auto matieally operate Iuponistripsyof woo'dfin a rapid manner tohoth 'bei'i'el theendsidf the strip and tofdrill, or votherwiseflwork upon the intermediate portions; of 'th'elstrip.

Further s objects of this invention .are to provide a machine for operating upon strips which will -removethe stripslfr'om a hopper inwan automatic and. rapidamann'er, r and which will advanceithem with periods of dwell a allowing t the other .portion of the Further objects are to provide amachine for operating uponiwoodenstrips in which stationary knives are provided againsbwhich the wood is forced; and :with'theknivesso arranged thattheyiqwill take successive cuts from the 'WOOd and i/ p'roduce "waffi nishd shapedend. a

Further objects arefl-tqlprovidefla machine which will securely' holdQ-the I work while drills operate and whichuwill correctl'y cn- 'ter or position thestrips of wood for the drills and for the knives. v i

An embodiment of. the invention is shown in the accompanying-drawings, in which Figure 1 is a plan viewvof the machine.

' Figure 2 is a sectional elevation taken on the line 2-.2 oiF igure 3.

. Referring to the..drawings,iit will-be seen a -F -igure 3 is a transverse sectional View on the "line 3- 3 of F gure 7 2.

Figure lis a sectional yiewon the line -v,4,l4 of.nEigure 1.

Figure- 5" is a is 55.-'of Figure 3. I Eigure 6 is a sectional View .onbthe line T 6 +6 of- Figure 4, and "drawn. to an enlarged scale.

- Figure 7 is a detail ot one of the presser feet for holding. the work;

ectional View on. the. line :thatthe amachine comprises a' bedQ-plate 1 which in reality .may be ,:'an open :frame work. This bed ,plate.receives"tl1e work. which is preferably carried. by means of a Y pair of sidestrips2 :upon which the Tends of wooden hars'rest. Preferably a transverse strip ,3.,is;lpositioned immediatelybe- .neath the drills -hereinafter..described land 7 extends-from onememherto-the other. ,This

"justment of this end drill.

. permit passage of" the drills therethroughi -Preferably oneor more ofthe apertures are elongatedyas indicated at5, topermit ad- A pair of side framemembers "6' are bolted to the bed plate v 1 and project upwardly th'erefrom. These members, as shown parfiticula'rlyinFigures 1 *a'ndQ, are provided with hearings 7 through which-the supporting'rods 8 for the drill frame extend. These rods 8 are rigidly secured to a "cross-head 9 or frame as shown in greatest detailin Figures '2 and 5, and thus raise'and lower the "frame when the rods are correspondingly moved.

These'rods carry at their lower ends rollers 10 which ride upon cams 11 mounted at oppositeflends era trans- Verse shaft '12, suchshaft being carried in suitable be'aringsbeneath the bed plate.

The shaft 12 is'provided-with' an enlarged 1 gear l8 meshing with-a smaller pinion 14,

as shown; particularly in Figure 3, and 'it'is to be noted that the'pinion 14; 'is'carried upon 'th e driven,shaftl5 of the machine. The shaft 15 -is -g'provided "with tight and 1-loose pulleys 16" and 17 "adapted toureceive j-a lbelt. Preferably; an additionatbe'aring 1 [18 is nounted at the endof the driven 'sh'alft 1'5. This fdriven' shaft projects completely across the machine b'elow the'bed blate and isproizided' with a bevel gear 19 which 'meshes with *afbevel gear 20 carried by a fv-ertijcal shaft 21. The vertical shaft 2l,"as maybe s'een"'fromFigu-re 5', carries a'irelatively largepu'lley or drum 22 which "has-a wide "belt face'and receives the "narrow? belt 23. The erosshea'd or frame 9 carries p111-v rality' ofdrill spindles E ite 27'. One or jmore of these spindles may "be adjusted "by bolting the "bearings to the crosshea'd i or 'frame'9. Int-he form SHOWIlythG end-:spin- -..dle 24'is cs0 mounted, and the crosshead 9 'isjprovided witha plurality'of apertures 28 adapted to receive the bolts or screws 29 fm c the bearings"30. Y

, .The drive for the several spindles isby means; ofthe belt23. For instance, thisbelt 23 passesover' a flanged jpulley 31 secured tothe spindle 25. 'The spindles are provided with suitable pulleys forthe short belts hereinafter described. As shown in Figure 5,

{the spindle'25 is'eon-nee'ted to the spindle '27 by means of-the belt'32. "It is alsogconnectedYto the'spindle' 26' by' means of the belt 33. The spindle 26 is connected with the spindle 24 by means of the belt 34.

When the spindle 24is adjusted, it is obvious that means must be provided for acject atan angle to the horizontal and have commodating the change in length of the belt. This is furnished by means of the belt tightener which, as may be seen from Figure 5, includes a pair of pulleys carried by a shaft or stem 36 screw threaded into a bracket 37 bolted to the'crosshead and locked by means of a lock nut. Thus, when the spindle24 is moved inwardly the pulleys of thebelt tightener 35 arerocked into a position to take up this slack and, thereafter, the

i belt tightener is locked in posit-ion by means of the'lock nut. h

When the crosshead 9 reciprocates up and down, it will be noted that sufficient roomis furnished by the broad face of the pulley 22 to permit this shifting of the belt 23 while imparting continuous rotary motion to the gang of drills.

A supporting .bar 38 extends transversely above the bed plate and carries a presser foot 39 at each end thereof. The presser feet are each provided with a plurality of bolts 40 which are loosely surrounded by springs to urge the presser feet downwardly. The presser feet, as may be seen from Figure 4, are equipped with upturned forward and rear ends to facilitate the movement thereunder of the strips of wood, as. indicated at 41 in Figure 4. It is to be noted further that one or both of the resser feet may be adjusted along the length of the bar 38.

Each presser foot" is carried by means of a box-like member '42 (see Figure 6) which houses the bolts and springs, and which'is itself bolted to the bar 38. The adjustment of the presser feet is to accommodate differ ent lengths of strips with a corresponding adjustment of the end drill, as'previously described. Each of the box-like members which carry the presser feet, is provided with slanting faces 43 and 44upon which knives 45 are bolted. These knives 45: protheir forward ends presented towards the front of the machine and are adapted to sueces sively pare off the ends of the wooden strips, thus providing a finished beveled face v rods 55.

as the stripsare pushed past the bars.

The strips are carried in a hopper mounted above the bed plate. This hopper consists of upper and lower bars 46 and 47, as most clearly shown in Figures 4 and 6. The bars bars 49 having outwardly turned ends are are joined by means of end members 48 provided with flaring channel-shaped upper ends, as most clearly shown in Figure 1, to

aid in guiding the strips into the hopper. Further, a plurality of intermediate vertical provided and join the bars 46 and 47 it is to be noted, particularly from Figures 1 and 6, that intermediate plate-like members 50 passage of the strips are secured to the bars. These plates are provided with notches 51 which may receive the adjustable end plates 52, as indicated in dotted lines in Figure 6, when it is desired to operate upon a shorter length of strip, thus adapting the-hopper to the length; of strip employed. It is to be noted that the hopper ismounted in advance of the transverse bar .38 and is spaced above the bed plate of the machine.

A transverse reciprocatory bar or, crosshead 53 is mounted above the bed plate and has downwardly projecting lugs 54 (see Figure 4) which are rigidlyattaehed to rods 55, such rods being guided in apertured projectinglugs'56 integral with the bed pl'ate, as shown in Figure 4. The transverse cross- I head 53 carries a plunger 57 at 'eachend and such plungers are adapted to passbeneath the hopper and remove the lowest strip'and project such strip forwardly into .position beneath the presser feet 39 and in correct position to be'operated upon bythe drills. It is to be noted that during theforwar d that their ends are be v el'e'd by means of the knives 45, as previously described, and preferably the plungers 57 are correspondingly beveled, as indicated at 58. These plungers are set'in slots in the crosshead 53 and bolted thereto. Preferably thecros'shead is provided .with a plurality of slots 59 intermediate its ends to receive one of the plungers for difierent adjustments of the machine corresponding to different le'ngthsof strips.- The means. for oscillating the crosshead 53 and consequently the plungers may comprise cranks 60 carried by the shaft 12,'as

shown in Figures-1, 2 and 3. For instance,

to house the crosshead 53 audits plungers and also guard straps 63 project outwardly to house the outer ends of'thereciprocatory It isto be 'notedparticularly from referenceto Figure 2 that the cam 11 is designed to lower the drills while the cross- I head is moving rearwardly, and to raise the drills prior to the forward stroke of' the crosshead, such cam preferably providing a period. of dwell for the upper. portion of I the stroke of the drills.

' rips" are: positioned withinthe hop er and are'removed in regular succession" rom the hopper by the sliding plungers 57'which pass beneath" the hopper and advance the strips in succession be- In operation, the s neath the spring pressed presser feet. Thereafter, the drillsoperate and the plungers are retracted. During the forward passage of the strips, the knives 45 pare ofi the ends of the strips and correctly bevel them or otherwise shape them.

It will be seen that a very simple type of machine has been provided which is wholly automatic in its action, and which simultaneously drills a number of holes in the strips and also automatically bevels the ends thereof.

Further, it is to be noted that the utmost accuracy of operation is attained by this machine as the spring pressed presser feet, as shown in Figure 7, accurately guide the strips to their correct position. Upon reference to this figure, it will be seen that. the presser feet are provided with downwardly turned end lugs 64 which have outwardly turned ends adapted to receive and guide the ends of the strips 41 as they are slid beneath such presser feet. 7

It will be seen further that the mach ne 1 is very simple and of relatively sturdy construction and not likely to get out of order.

Although the invention has been described in considerable detail, it is to be understood that the invention may be variously embodied and is, therefore, to be limited only'as claimed.

I claim: a

A machine for operating upon strips comprising a bed plate, a transverse bar mounted above said bed plate, a pair of spring pressed feet carried by said bar and having guiding lugs at their ends for guiding the ends of said strips, one of said presser feet being adjustable, a frame mounted for reciprocation above said bed plate, a gang of drills carried by said frame, means for si multaneously depressing said drills, means for ad ustm'g one of said drills, means for driving said drills and permitting the ad-- justmentof the adjustable drill, a hopper for said strips spaced above said bed plate,

a plunger slidably carried by said bed plate and adapted to slide beneath saidhopper and to feed strips from said hopper to a position beneaththe presser feet, and'means for reciprocating said plunger.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of lVisconsin. p

ADOLPH N. MILLER. 

